svn commit: r190403 - head/sys/powerpc/powermac
Weongyo Jeong
weongyo.jeong at gmail.com
Wed Mar 25 19:14:32 PDT 2009
On Wed, Mar 25, 2009 at 03:42:49AM +0000, Nathan Whitehorn wrote:
> Author: nwhitehorn
> Date: Wed Mar 25 03:42:49 2009
> New Revision: 190403
> URL: http://svn.freebsd.org/changeset/base/190403
>
> Log:
> Disable ATA DMA for ATAPI devices for now. Apparently, certain revisions
> of this controller, in combination with certain ATAPI devices and phases
> of the moon, will cause DMA operations for ATAPI to fail.
>
> Modified:
> head/sys/powerpc/powermac/ata_macio.c
>
> Modified: head/sys/powerpc/powermac/ata_macio.c
> ==============================================================================
> --- head/sys/powerpc/powermac/ata_macio.c Wed Mar 25 03:02:03 2009 (r190402)
> +++ head/sys/powerpc/powermac/ata_macio.c Wed Mar 25 03:42:49 2009 (r190403)
> @@ -259,6 +259,10 @@ ata_macio_setmode(device_t parent, devic
>
> mode = ata_limit_mode(dev, mode, sc->max_mode);
>
> + /* XXX Some controllers don't work correctly with ATAPI DMA */
> + if (atadev->param.config & ATA_PROTO_ATAPI)
> + mode = ata_limit_mode(dev, mode, ATA_PIO_MAX);
> +
> if (ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode))
> return;
With this commit my iBook G4 boots successfully without setting
`hw.ata.atapi_dma=0'. Thanks! It'd be best if I can use ATAPI DMA
soon.
regards,
Weongyo Jeong
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